All ports
Port436/UDP
dna-cmlPort
436
Protocol
UDP
Category
Well-Known
Service
dna-cml
What is port 436?
Port 436/UDP is a Well-Known port, assigned by IANA for widely recognized services. It is associated with the dna-cml service.
DNA-CML
Useful commands
nmapnmap -p 436 -sV example.comnetcatnc -zv example.com 436curlcurl -v http://example.com:436/telnettelnet example.com 436bash(echo > /dev/udp/example.com/436) 2>/dev/nullFirewall commands
UFWAllow
sudo ufw allow 436/udpDeny
sudo ufw deny 436/udpiptablesAllow
sudo iptables -A INPUT -p udp --dport 436 -j ACCEPTDeny
sudo iptables -D INPUT -p udp --dport 436 -j ACCEPTfirewalldAllow
sudo firewall-cmd --permanent --add-port=436/udpWindowsAllow
netsh advfirewall firewall add rule name="Open Port 436" dir=in action=allow protocol=UDP localport=436Security Risks
- Unauthorized access to the service
- Data exposure if the service is unauthenticated
- Outdated versions with vulnerabilities
- Incorrect service configuration
Frequently Asked Questions
What service runs on port 436/UDP?
Port 436/UDP is associated with the dna-cml service. DNA-CML
Is it safe to expose port 436 to the Internet?
It depends on the service and configuration. Port 436 (dna-cml) is a Well-Known port. If you need to expose it, keep the service updated, use strong authentication, and configure a firewall. It's always recommended to restrict access by IP when possible.
How do I check if port 436 is open?
You can use nmap: `nmap -p 436 -sV example.com`, netcat: `nc -zv example.com 436`, or the bash command: `(echo > /dev/udp/example.com/436) 2>/dev/null && echo "Open" || echo "Closed"`.
How do I open or close port 436 on my firewall?
On Linux with UFW: `sudo ufw allow 436/udp` (open) or `sudo ufw deny 436/udp` (close). With iptables: `sudo iptables -A INPUT -p udp --dport 436 -j ACCEPT`. On Windows: `netsh advfirewall firewall add rule name="Open Port 436" dir=in action=allow protocol=UDP localport=436`.
What applications and services use port 436?
Port 436/UDP is used by the dna-cml service. Specific uses depend on the software and configuration. Check our related tools section for more information.